<template>
  <div id="app">
    <h2>我是App组件</h2>
    <Child/>
  </div>
</template>

<script>
import { ref, reactive, toRefs,provide } from "vue";
import Child from "./components/Child";
export default {
  name: "App",
  components: {
    Child
  }
  
};
</script>

<style>
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding: 10px;
  background: orange;
}
</style>
